PEDS101 Lecture Notes - Lecture 8: Pearson Education, Neuromuscular Junction, Autonomic Nervous System
28 Mar 2016
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Efferent Division:
Autonomic and Somatic
Motor Control
Chapter 11
Copyright © 2009 Pearson Education, Inc.
© 2013 Pearson Education, Inc.
Motor Control
Overview
•Autonomic division
•Anatagonistic control
•Autonomic pathways
•Targets and neurotransmitter release
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Adrenal medulla
Copyright © 2009 Pearson Education, Inc.
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Adrenal medulla
•Somatic division
•Neuromuscular junction
•Neurotransmitter release
•Motor unit recordings in humans
Role of the Autonomic Division in Homeostasis
Antagonistic branches- Parasympathetic and Sympathetic
(compare responses in the table in Fig 11-5)
Restore body function Energetic action
Copyright © 2009 Pearson Education, Inc. Figure 11-1
Document Summary
Antagonistic branches- parasympathetic and sympathetic (compare responses in the table in fig 11-5) Most internal organs are under antagonistic control: one autonomic branch is excitatory and the other branch is inhibitory, example, example, effector organ: heart, parasympathetic response: slows rate, sympathetic response: increases rate and force of contraction. Coordination of homeostatic responses: autonomic, endocrine, behavioral. Copyright 2009 pearson education, inc. increase heart rate release epinephrine run! Functions: water balance, temperature, hunger, respiration, cardiac, vomiting, swallowing. Ganglion is a group of cells is the pns. Cell bodies/ganglia found here in the spinal cord. Ganglia are found on or very near the targets. Different blood vessels has different receptors, telling it to either constrict or dilate. **all parasympathetic responses are mediated by muscarinic receptors. Sympathetic and parasympathetic pathways are different in terms of sympathetic: Preganglia neurons are shorter, but longer postganglia neurons. Preganglia are longer but the postganglia are shorter. Sympathetic versus parasympathetic pathways . are different in terms of .
